1125720678 has 16 divisors (see below), whose sum is σ = 2272484160. Its totient is φ = 371733096.

The previous prime is 1125720647. The next prime is 1125720679. The reversal of 1125720678 is 8760275211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125720679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876088 + ... + 877371.

It is an arithmetic number, because the mean of its divisors is an integer number (142030260).

Almost surely, 2^1125720678 is an apocalyptic number.

1125720678 is an abundant number, since it is smaller than the sum of its proper divisors (1146763482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125720678 is a wasteful number, since it uses less digits than its factorization.

1125720678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753571.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 1125720678 is about 33551.7611758310. The cubic root of 1125720678 is about 1040.2639486608.

Adding to 1125720678 its reverse (8760275211), we get a palindrome (9885995889).

The spelling of 1125720678 in words is "one billion, one hundred twenty-five million, seven hundred twenty thousand, six hundred seventy-eight".